太湖地区稻田氮肥吸收及其利用的研究  

Nitrogen uptake and its utilization by rice in paddy field of Taihu area

作　　者：宋勇生[1] 范晓晖[1] 

机构地区：[1]中国科学院南京土壤研究所,南京210008

出　　处：《应用生态学报》2003年第11期2081-2083,共3页Chinese Journal of Applied Ecology

基　　金：国家重点基础研究发展规划项目(G19990 1180 2 );中国科学院知识创新工程项目(KZCX2 413 3);国家自然科学基金重大资助项目(3 0 3 90 0 80 )

摘　　要：The effects of different amounts and kinds of nitrogen fertilizer on rice yield and its nitrogen uptake and utilization were studied on a main paddy soil (Wushan soil) of Taihu area. The results indicated that the optimal amount of nitrogen fertilizer was about 180 kg N·hm -2 for rice production. Applying ammonium sulfate was better than applying urea for increasing rice yield. The efficiency of nitrogen fertilizer in this experiment was about 41.8～48.5%, and its loss was 22.8～38.1% .The effects of different amounts and kinds of nitrogen fertilizer on rice yield and its nitrogen uptake and utilization were studied on a main paddy soil (Wushan soil) of Taihu area. The results indicated that the optimal amount of nitrogen fertilizer was about 180 kg N·hm -2 for rice production. Applying ammonium sulfate was better than applying urea for increasing rice yield. The efficiency of nitrogen fertilizer in this experiment was about 41.8～48.5%, and its loss was 22.8～38.1% .

关 键 词：太湖地区 稻田 氮肥 吸收 利用 

分 类 号：S143[农业科学—肥料学]